# SAT Practice: Physical Processes (2013/Levels 3-5)

In this worksheet students practise the 2013 SAT style questions similar of those contained in past SAT papers.

Key stage:  KS 2

Curriculum topic:   Practice Papers

Curriculum subtopic:   SAT Practice Papers

Difficulty level:

### QUESTION 1 of 10

This worksheet contains 20 SAT style questions, focusing on the Physical Processes strand (SAT 2013).

These questions are typical of the type students will come across during the examination and are appropriate for those students who will sit the level 3-5 paper.

This worksheet covers the whole of Physical Processes. Its major assessment focus is knowledge and understanding.

David has created a simple series circuit.

The circuit contains one battery and two lamps.

What would happen to the brightness of the lamps if David added another lamp, in series, into the circuit?

They would shine less brightly.

They would shine more brightly.

These girls are throwing a ball to each other.

There are many forces acting on the ball when it is thrown.

What is the name of the force that pulls the ball towards the ground?

air resistance

gravity

push

Light travels from a source of straight lines.

Shadows form when the path of light is blocked by an object or objects.

What word is used to describe a material that allows light to pass through it?

opaque

transparent

A sound is made when a guitar string is plucked. This sound is called a note.

The pitch of the note can be altered by making the guitar strings tighter or looser.

What would happen to the pitch of a note if the guitar strings were tightened?

It would decrease.

It would increase.

Electricians use circuit diagrams to help them layout electrical circuits in a building.

In a circuit diagram each component is represented by a symbol.

Identify all four components in the circuit diagram.

battery

buzzer

lamp

motor

switch

voltmeter

The Earth is a sphere. The Earth spins on a slightly titled axis.

One complete day on Earth is the time taken (in hours) for the earth to spin completely on its axis.

How long is one day on Earth?

6 hours

12 hours

24 hours

48 hours

This parachutist is falling towards the ground.

Gravity is pulling the parachutist towards the ground. Air resistance is also acting on the parachutist.

What effect is air resistance having on the speed of the parachutists fall?

Air resistance is causing the parachutist to speed up.

Air resistance is causing the parachutist to slow down.

These two magnets have been placed next to each other on a table about ten centimetres apart from each other.

Two students, Sarah and Jane, are discussing what would happen to the magnets if they were moved closer together.

Jane says: "if we try to move the magnets closer together nothing will happen because they will repel each other".

Sarah says: "if we move the magnets closer together they will be attracted to each other and stick together".

Which student is correct?

Jane

Sarah

This lady is using her mirror.

What word do we use to describe a property of all mirrors which makes them excellent reflectors?

Write one word.

This is a sports car. This car has been designed to reach very high speeds.

What word do we use to describe machines that have been designed to travel fast through air?

sleek

streamlined

The Moon is a satellite that orbits Earth.

Sometimes you will hear somebody say: "the Moon is very bright tonight".

Is the Moon a light source?

no

yes

A periscope is used by submarines to observe above the surface of the water.

Light enters a periscope at the top and is reflected off two mirrors before it reaches our eyes.

Which statement is correct?

When a light ray hits a mirror it is reflected back at a greater angle.

When a light ray hits a mirror it is reflected back at a narrower angle.

When a light ray hits a mirror it is reflected back at the same angle.

Sounds travel as vibrations.

These vibrations are transmitted through the air and picked up by our ears.

Which two mediums can a sound travel through?

liquid

solid

vacuum

Sound waves are the unique patterns made by vibrating particles when a sound is transmitted.

The amplitude of the sound wave is the volume of the sound.

A new sound wave is produced, its amplitude is greater than the amplitude of the first sound wave.

What can we conclude about the volume of this new sound?

It is louder than the first sound.

It is quieter than the first sound.

The Sun, the Earth and the Moon are all approximately spheres.

Their relative sizes, compared to each other, can be represented by placing a beach ball next to a tennis ball and a marble.

Each of these spheres exerts a gravitational pull on the other.

Which statement is correct?

The Sun is bigger than the Earth so its gravitational pull is greater than Earth's. The Moon is bigger than the Earth so its gravitational pull is also greater than Earth's.

The Sun is bigger than the Earth so its gravitational pull is greater than Earth's. The Moon is smaller than the Earth so its gravitational pull is also smaller than Earth's.

A switch allows the flow of energy to be controlled in an electrical circuit.

A switch is a gap in a circuit.

Class 6a are investigating which materials could be used to make a switch. They inserted various materials into the gap in the circuit below and observed if the lamp lights or not.

When a paper clip was placed in the gap, the lamp illuminated. When a perspex rod was placed in the gap the lamp did not light up.

What word do we use to describe perspex?

Write one word.

During the day the position of the Sun in the sky appears to change.

A sun dial was a very early version of a clock.

At midday the shadow on the sun dial is very short, and points straight up the face of the dial.

Why are shadows shorter at midday compared to the evenings and in the morning?

The Sun is at its highest point in the sky.

The Sun is at its lowest point in the sky.

Friction is a force that is generated when two materials touch each other.

Rough surfaces like sand paper generate large amounts of friction.

A bobsleigh is designed to travel down an ice race track as quickly as possible.

Why do bobsleigh pilots polish the blades of their sleighs until they are very smooth and shiny?

To generate as much friction as possible so that the sleigh will be easier to control.

To reduce friction as much as possible so that the sleigh can complete the course in the quickest possible time.

This man's car has broken down.

He is trying to push his car off the road so that it is not dangerous to traffic.

Identify four things that can happen to an object when a force is applied to it.

Start each sentence with the phrase It can.

Many of the devices we use in our home run off electricity.

Which device from the list below does not need mains electricity to work.

fridge

kitchen clock

television

washing machine

• Question 1

David has created a simple series circuit.

The circuit contains one battery and two lamps.

What would happen to the brightness of the lamps if David added another lamp, in series, into the circuit?

They would shine less brightly.
EDDIE SAYS
Components, such as lamps, that are connected one after another in a circuit are connected in series.
In a series circuit the total voltage (the electrical energy in the circuit) is shared between all the components.
When David adds another lamp into this circuit the total amount of electrical energy flowing through the circuit now has to be shared between three components rather than two. The share of energy that each lamp will receive decreases so the lamps will shine less brightly.
• Question 2

These girls are throwing a ball to each other.

There are many forces acting on the ball when it is thrown.

What is the name of the force that pulls the ball towards the ground?

gravity
EDDIE SAYS
Gravity is an attractive force.
All objects exert a gravitational force which aims to pull smaller objects towards them. The Earth is a very large object and so exerts a large force of gravity. The Earth's gravitational force is strong enough to keep the Moon and other satellites in orbit around us.
Gravity acts on the centre of an object and pulls it towards the ground.
• Question 3

Light travels from a source of straight lines.

Shadows form when the path of light is blocked by an object or objects.

What word is used to describe a material that allows light to pass through it?

transparent
EDDIE SAYS
Opaque or translucent materials either completely or partially block the path of light. As a result a shadow will form when light shines on it.
Transparent materials allow light to pass through them easily. Glass is an excellent example of a transparent material.
• Question 4

A sound is made when a guitar string is plucked. This sound is called a note.

The pitch of the note can be altered by making the guitar strings tighter or looser.

What would happen to the pitch of a note if the guitar strings were tightened?

It would increase.
EDDIE SAYS
Increasing the tightness of the string increases the pitch of the note. This is because is tight string is actually shorter than a loose string, when the string is plucked the effect of the vibrations produced will be greater.
• Question 5

Electricians use circuit diagrams to help them layout electrical circuits in a building.

In a circuit diagram each component is represented by a symbol.

Identify all four components in the circuit diagram.

battery
lamp
motor
switch
EDDIE SAYS
This circuit contains a battery, one lamp, a motor and a switch. It is a parallel circuit.
The symbol for a battery is a short fat line next to a long thin line. In some older books and posters this symbol is sometimes called a cell.
The lamp and motor symbols are very common and should be quite easy to identify. The lamp symbol is a big X inside a circle; the symbol for a motor is a capital letter M inside a circle. Be careful not to confuse the symbol for a lamp with the symbol for a bulb.
The symbol for a switch is a short diagonal line leaning towards the top right of the page as you look at it. In this diagram the terminals (small circles) have been included too.
• Question 6

The Earth is a sphere. The Earth spins on a slightly titled axis.

One complete day on Earth is the time taken (in hours) for the earth to spin completely on its axis.

How long is one day on Earth?

24 hours
EDDIE SAYS
The Earth takes 24 hours to rotate (spin) completely on its axis.
• Question 7

This parachutist is falling towards the ground.

Gravity is pulling the parachutist towards the ground. Air resistance is also acting on the parachutist.

What effect is air resistance having on the speed of the parachutists fall?

Air resistance is causing the parachutist to slow down.
EDDIE SAYS
In this example the forces of gravity and air resistance (friction) are opposing one another. Air resistance is helping to slow the parachutist down.
A parachute maximises air resistance by having a large surface area.
• Question 8

These two magnets have been placed next to each other on a table about ten centimetres apart from each other.

Two students, Sarah and Jane, are discussing what would happen to the magnets if they were moved closer together.

Jane says: "if we try to move the magnets closer together nothing will happen because they will repel each other".

Sarah says: "if we move the magnets closer together they will be attracted to each other and stick together".

Which student is correct?

Jane
EDDIE SAYS
These magnets are arranged north pole to north pole. They will repel one another.
Opposite poles of a pair of magnets are always attracted to each other, like poles will always repel each other.
• Question 9

This lady is using her mirror.

What word do we use to describe a property of all mirrors which makes them excellent reflectors?

Write one word.

Shiny
shiny
EDDIE SAYS
Mirrors are an example of a shiny surface. Shiny surfaces reflect light really well because they are very smooth so light bounces of them easily.
• Question 10

This is a sports car. This car has been designed to reach very high speeds.

What word do we use to describe machines that have been designed to travel fast through air?

streamlined
EDDIE SAYS
Streamlined machines, such as this car and fast trains, have been designed to overcome air resistance.
They have low and pointy front ends which direct oncoming air up and over the machine. We say they "cut" through the air.
• Question 11

The Moon is a satellite that orbits Earth.

Sometimes you will hear somebody say: "the Moon is very bright tonight".

Is the Moon a light source?

no
EDDIE SAYS
The Moon is not a light source. Light from the Sun is reflected by the Moon.
• Question 12

A periscope is used by submarines to observe above the surface of the water.

Light enters a periscope at the top and is reflected off two mirrors before it reaches our eyes.

Which statement is correct?

When a light ray hits a mirror it is reflected back at the same angle.
EDDIE SAYS
Light is always reflected back off a surface at the same angle as it hit the surface.
• Question 13

Sounds travel as vibrations.

These vibrations are transmitted through the air and picked up by our ears.

Which two mediums can a sound travel through?

liquid
solid
EDDIE SAYS
Sounds are transmitted when vibrating particles collide with each other. Solids and liquids (like air, a gas) transmit sounds quite easily because the particles in these two mediums are relatively close together.
A vacuum cannot transmit any sounds because there are no particles in a vacuum.
• Question 14

Sound waves are the unique patterns made by vibrating particles when a sound is transmitted.

The amplitude of the sound wave is the volume of the sound.

A new sound wave is produced, its amplitude is greater than the amplitude of the first sound wave.

What can we conclude about the volume of this new sound?

It is louder than the first sound.
EDDIE SAYS
Louder sounds have a greater amplitude (or volume) than quieter sounds because they have been created with more energy.
The more force that is used to make the sound, the greater the vibrations created and the louder it will appear.
• Question 15

The Sun, the Earth and the Moon are all approximately spheres.

Their relative sizes, compared to each other, can be represented by placing a beach ball next to a tennis ball and a marble.

Each of these spheres exerts a gravitational pull on the other.

Which statement is correct?

The Sun is bigger than the Earth so its gravitational pull is greater than Earth's. The Moon is smaller than the Earth so its gravitational pull is also smaller than Earth's.
EDDIE SAYS
The bigger the object the greater that gravitational force it exerts.
The Sun is massive, its gravitational force is enough to keep all of the planets in the solar system (including Earth) in orbit around it.
The Earth's gravity is much smaller than the Sun's but still much bigger than the Moon's. This is because the Earth is much bigger than the Moon. The Moon orbits the Earth and its orbit is maintained by the Earth's gravity.
• Question 16

A switch allows the flow of energy to be controlled in an electrical circuit.

A switch is a gap in a circuit.

Class 6a are investigating which materials could be used to make a switch. They inserted various materials into the gap in the circuit below and observed if the lamp lights or not.

When a paper clip was placed in the gap, the lamp illuminated. When a perspex rod was placed in the gap the lamp did not light up.

What word do we use to describe perspex?

Write one word.

Insulator
insulator
EDDIE SAYS
Metals, like the material the paper clip is made from are conductors. This is because the electrons in the circuit can flow between the particles in the metal paper clip.
Perspex is an insulator. Electrons cannot flow between the particles in perspex.
• Question 17

During the day the position of the Sun in the sky appears to change.

A sun dial was a very early version of a clock.

At midday the shadow on the sun dial is very short, and points straight up the face of the dial.

Why are shadows shorter at midday compared to the evenings and in the morning?

The Sun is at its highest point in the sky.
EDDIE SAYS
Due to the rotation of the Earth around the Sun, it appears that the Sun changes position in the sky throughout the day.
At midday the Sun is at its highest point in the sky, it is almost directly above us. As a result the shadows that form are very short.
• Question 18

Friction is a force that is generated when two materials touch each other.

Rough surfaces like sand paper generate large amounts of friction.

A bobsleigh is designed to travel down an ice race track as quickly as possible.

Why do bobsleigh pilots polish the blades of their sleighs until they are very smooth and shiny?

To reduce friction as much as possible so that the sleigh can complete the course in the quickest possible time.
EDDIE SAYS
Shiny, smooth surfaces generate less friction than rough surfaces. On an icy race track a bobsleigh will travel much faster if friction is reduced.
• Question 19

This man's car has broken down.

He is trying to push his car off the road so that it is not dangerous to traffic.

Identify four things that can happen to an object when a force is applied to it.

Start each sentence with the phrase It can.

It can change direction.
It can change shape.
It can slow down.
It can speed up.
EDDIE SAYS
When a force is applied to an object the object will either slow down or speed up, change direction or change shape.
In order for this effect to occur, a resistance force (from the object) must be overcome.
• Question 20

Many of the devices we use in our home run off electricity.

Which device from the list below does not need mains electricity to work.

kitchen clock
EDDIE SAYS
Larger devices often require mains electricity in order to work. Some devices, such as a laptop computer, can work using a battery on their own for some time but they need to be plugged in eventually to recharge the battery.
Smaller devices which do not require a lot of power to work can run off batteries for considerable periods of time.
---- OR ----

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